Traditional project effort estimation utilizes development models that span the entire project life cycle and thus culminates estimation errors. This exploratory research is the first attempt to break each project act...Traditional project effort estimation utilizes development models that span the entire project life cycle and thus culminates estimation errors. This exploratory research is the first attempt to break each project activity down to smaller work elements. There are eight work elements, each of which is being defined and symbolized with visually distinct shape. The purpose is to standardize the operations associated with the development process in the form of a visual symbolic flow map. Hence, developers can streamline their work systematically. Project effort estimation can be determined based on these standard work elements that not only help identify essential cost drivers for estimation, but also reduce latency cost to enhance estimation efficiency. Benefits of the proposed work element scheme are project visibility, better control for immediate pay-off and, in long term management, standardization for software process automation.展开更多
C4ISR(Command、Control、Communication、Computer、Intelligence、Surveillance and Reconnaissance)系统开发的仿真活动贯穿于系统全生命周期的各个阶段,仿真支持过程联系着C4ISR系统开发仿真的各类要素。首先对C4ISR系统开发仿真支...C4ISR(Command、Control、Communication、Computer、Intelligence、Surveillance and Reconnaissance)系统开发的仿真活动贯穿于系统全生命周期的各个阶段,仿真支持过程联系着C4ISR系统开发仿真的各类要素。首先对C4ISR系统开发仿真支持的内容进行分析,从生命周期维、仿真产品维和仿真任务维三个维度描述仿真支持内容之间的联系。然后分析了C4ISR系统开发仿真支持过程的层次性,应用UML描述了支持过程中的仿真项目模型和仿真过程模型。在此基础上,应用基于Petri网的工作流网,对C4ISR系统开发的仿真支持过程进行建模,分析了支持过程中活动、产品、角色、约束四类要素的Petri网表示方式。最后在一个C4ISR系统开发仿真支持实例中应用以上分析和建模方法,验证了方法的可行性和应用效果。展开更多
文摘Traditional project effort estimation utilizes development models that span the entire project life cycle and thus culminates estimation errors. This exploratory research is the first attempt to break each project activity down to smaller work elements. There are eight work elements, each of which is being defined and symbolized with visually distinct shape. The purpose is to standardize the operations associated with the development process in the form of a visual symbolic flow map. Hence, developers can streamline their work systematically. Project effort estimation can be determined based on these standard work elements that not only help identify essential cost drivers for estimation, but also reduce latency cost to enhance estimation efficiency. Benefits of the proposed work element scheme are project visibility, better control for immediate pay-off and, in long term management, standardization for software process automation.
文摘C4ISR(Command、Control、Communication、Computer、Intelligence、Surveillance and Reconnaissance)系统开发的仿真活动贯穿于系统全生命周期的各个阶段,仿真支持过程联系着C4ISR系统开发仿真的各类要素。首先对C4ISR系统开发仿真支持的内容进行分析,从生命周期维、仿真产品维和仿真任务维三个维度描述仿真支持内容之间的联系。然后分析了C4ISR系统开发仿真支持过程的层次性,应用UML描述了支持过程中的仿真项目模型和仿真过程模型。在此基础上,应用基于Petri网的工作流网,对C4ISR系统开发的仿真支持过程进行建模,分析了支持过程中活动、产品、角色、约束四类要素的Petri网表示方式。最后在一个C4ISR系统开发仿真支持实例中应用以上分析和建模方法,验证了方法的可行性和应用效果。
